Analysis of Magnetic Saturation Characteristics of Control Rod Drive Mechanism
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摘要: 利用理论分析和有限元分析（FEA）相结合的方法，研究了控制棒驱动机构（CRDM）中磁路饱和对电磁参数以及磁路参数的影响。通过建立CRDM等效磁路（EMC）模型，推导获取磁路参数的方法，并基于FEA获得了CRDM电磁参数以及磁路参数随电流和主气隙长度的变化趋势。分析结果表明，主磁路剩余磁阻和线圈电感受磁路饱和的影响较大；CRDM漏磁系数与磁路饱和的关系较小，但受主气隙长度的影响较大；主气隙磁阻的计算应考虑气隙磁通边缘效应。本研究为CRDM的EMC模型优化提供了理论依据。
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关键词:
- 控制棒驱动机构（CRDM） /
- 磁路饱和 /
- 等效磁路（EMC）模型 /
- 有限元分析（FEA）
Abstract: In this paper, the impact of magnetic saturation on the electromagnetic parameters and magnetic circuit parameters of the control rod drive mechanism (CRDM) is studied by combining theoretical and finite element analysis (FEA). The method of obtaining magnetic circuit parameters is derived by establishing an equivalent magnetic circuit (EMC) model of the CRDM. The change law of the electromagnetic and magnetic circuit parameters of the CRDM with the current and length of the main air gap is obtained based on FEA. The results show that magnetic saturation significantly affects the main magnetic circuit's residual reluctance and inductance. The flux leakage coefficient of the CRDM has little relationship with the magnetic saturation but is greatly affected by the length of the main air gap. The reluctance of the main air gap should consider the air gap flux edge effect. This study provides a theoretical basis for the EMC model optimization of CRDM. -
图 2 提升线圈所在磁路简化结构示意图
x—主气隙长度，0≤x≤lg（lg—最大主气隙长度）；L—线圈电感，其大小与主气隙长度相关；i—线圈电流。
Figure 2. Simplified Structure Diagram of Magnetic Circuit Where the Lift Coil is Located
图 3 EMC模型
Φ—总磁通；Φσ—漏磁通；Ry—磁轭-导磁环磁阻，与材料的饱和程度有关，为非线性磁阻；Rσ—漏磁阻，与磁路的饱和程度无关；Rmg—主气隙磁阻；N—线圈匝数
Figure 3. EMC Model
图 7 不同线圈电流下电感随主气隙长度变化曲线
Figure 7. Change Curve of Inductance with Main Air Gap Length under Different Coil Currents
图 8 不同线圈电流下总磁通随主气隙长度变化曲线
Figure 8. Change Curve of Total Flux with Main Air Gap Length under Different Coil Currents
图 9 不同线圈电流下电磁提升力随主气隙长度变化曲线
Figure 9. Change Curve of Electromagnetic Lifting Force with Main Air Gap Length under Different Coil Currents
图 10 不同线圈电流下漏磁系数随主气隙长度变化规律
Figure 10. Variation of Magnetic Leakage Coefficient with Main Air Gap Length under Different Coil Currents
图 11 主磁路剩余磁阻随线圈电流变化曲线
Figure 11. Change Curve of Residual Reluctance of Main Magnetic Circuit with Current
图 12 不同线圈电流下主气隙磁阻随主气隙长度变化曲线
Figure 12. Change Curve of Main Air Gap Reluctance with Main Air Gap Length under Different Coil Currents
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[1] 朱齐荣,朱京昌. 控制棒驱动机构的电磁设计计算[J]. 核动力工程,1991, 12(3): 35-40. [2] 沈小要. 控制棒驱动机构动态提升特性研究[J]. 核动力工程,2012, 33(1): 51-55. doi: 10.3969/j.issn.0258-0926.2012.01.011 [3] 邓强,陈西南,刘佳,等. 磁力提升型控制棒驱动机构提升动作过程动力学分析[J]. 机械设计与制造工程,2017, 46(4): 106-110. doi: 10.3969/j.issn.2095-509X.2017.04.026 [4] PARK B J, PHAM P T, HONG K S. Model reference robust adaptive control of control element drive mechanism in a nuclear power plant[J]. International Journal of Control, Automation and Systems, 2020, 18(7): 1651-1661. doi: 10.1007/s12555-019-0987-3 [5] 许艳涛, 祖洪彪. 控制棒驱动机构步跃动作运动分析[C]//第十七届全国反应堆结构力学会议论文集. 上海: 中国力学学会, 2012. [6] 张知竹,刘志明,李海博,等. 磁力提升型控制棒驱动机构电磁场仿真分析[J]. 机械设计与制造工程,2019, 48(12): 33-37. doi: 10.3969/j.issn.2095-509X.2019.12.008 [7] 贺新. 第三代压水堆数字化棒控棒位系统设计与实现[D]. 上海: 上海交通大学, 2018: 21-22. [8] 官瑞杨,魏新劳,王永红,等. 铁心电抗器气隙边缘效应计算及影响因素[J]. 电机与控制学报,2018, 22(4): 81-88. doi: 10.15938/j.emc.2018.04.011 -
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